ELECTRIC PROCESSING SYSTEM
First Claim
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1. An electric processing system comprising:
- bipolar type forceps which receive a high-frequency power applied from the outside and carry out processing to a living tissue held between distal ends;
a drive control apparatus which generates and outputs a high-frequency power which is intermittently applied to the forceps by feedback control which sets an output value of a subsequent high-frequency power based on the precedently output high-frequency power; and
a control portion which samples the sequentially output high-frequency power, detects a phase difference of a current and a voltage, detects occurrence of abnormal discharge between the distal ends based on the phase difference, reduces a voltage of the high-frequency power and prolongs an application time, the control portion being provided in the drive control apparatus.
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Abstract
There is provided an electric processing system which sequentially monitors a phase difference of intermittently output high-frequency powers in the case of performing feedback control with respect to a high-frequency power applied to bipolar type sealing forceps, reduces the high-frequency power and prolongs an application time at the time of occurrence of abnormal discharge (a spark) at distal ends, thereby terminating the abnormal discharge (extinguishing the spark) to carry out sealing processing.
362 Citations
4 Claims
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1. An electric processing system comprising:
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bipolar type forceps which receive a high-frequency power applied from the outside and carry out processing to a living tissue held between distal ends; a drive control apparatus which generates and outputs a high-frequency power which is intermittently applied to the forceps by feedback control which sets an output value of a subsequent high-frequency power based on the precedently output high-frequency power; and a control portion which samples the sequentially output high-frequency power, detects a phase difference of a current and a voltage, detects occurrence of abnormal discharge between the distal ends based on the phase difference, reduces a voltage of the high-frequency power and prolongs an application time, the control portion being provided in the drive control apparatus. - View Dependent Claims (2, 3)
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4. An electric processing system comprising:
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bipolar type forceps which receive a high-frequency power applied from the outside and carry out processing to a living tissue held between distal ends; a drive control apparatus which generates and outputs a high-frequency power which is intermittently applied to the forceps by feedback control which sets an output value of a subsequent high-frequency power based on the precedently output high-frequency power; and a control portion which samples the sequentially output high-frequency power, detects a tissue impedance from measuring an output current and an output voltage, detects occurrence of abnormal discharge between the distal ends of the forceps based on presence/absence of a pulsating signal produced in a differential signal obtained by differentiating a detection signal of the impedance, reduces a voltage of the high-frequency power and prolongs an application time, the control portion being provided in the drive control apparatus.
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Specification